To stream a playlist of local video files to YouTube Live with FFmpeg, list compatible files in an FFmpeg concat-demuxer file, then encode the combined input as H.264 video and AAC audio while sending it to YouTube’s RTMP ingest URL. The command below loops the list. It is a starting pattern, not a verified universal YouTube preset: check your installed FFmpeg build and YouTube’s current encoder guidance before choosing production settings. This guide means a playlist of files on your computer or server—not a YouTube watch-page playlist URL.
What you need before starting
- FFmpeg with the required input, muxer, and encoder support. The example uses
libx264for H.264 and FFmpeg’s native AAC encoder; available components can vary by build. See the FFmpeg codec documentation. - Local video files you have permission to use, with compatible streams if you plan to use the concat demuxer.
- A YouTube Live ingest URL and stream key from your live setup. Keep the key private; anyone who obtains it may be able to broadcast to your stream.
- A terminal or command prompt on a machine that can reach the internet and remain running for the duration of the broadcast.
Prepare a compatible playlist
Inspect the files
Use ffprobe to check each file’s video and audio codecs, dimensions, frame rate, sample rate, and stream layout. For example:
ffprobe -hide_banner -i "/media/clip-01.mp4"Repeat for every playlist entry. The concat demuxer joins files at the container level; it does not fix different codecs, stream layouts, or time bases. Inputs should have compatible streams and time bases. If clips differ substantially, normalize them first or concatenate with the filter workflow and re-encode. FFmpeg’s FAQ describes concat approaches, including the concat filter for cases that require re-encoding: FFmpeg FAQ: concatenating video files.
Create the concat list
Make a plain-text file named playlist.txt, with one file directive per entry:
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file '/media/clip-01.mp4'
file '/media/clip-02.mp4'
file '/media/clip-03.mp4'Use paths and quoting that match your operating system. Paths containing apostrophes need appropriate escaping. The command below uses -safe 0 to permit absolute paths; only use a list you control, since this relaxes FFmpeg’s default path-safety restriction.
Send the playlist to YouTube over RTMP
For compatible local files, this representative command reads the playlist in real time, loops it indefinitely, encodes H.264/AAC, and muxes the output as FLV for RTMP:
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ffmpeg -re -stream_loop -1 -f concat -safe 0 -i playlist.txt
-map 0:v:0 -map 0:a:0?
-c:v libx264 -pix_fmt yuv420p -preset veryfast
-c:a aac -b:a 128k -ar 44100 -ac 2
-f flv 'rtmp://YOUR_INGEST_URL/YOUR_STREAM_KEY'Replace the example destination with the RTMP ingest URL and stream key shown in YouTube’s live setup. Do not publish a script containing the key, commit it to a public repository, or paste it into public logs or support posts.
What the important options do
-rereads the file input at its native rate, rather than sending it as fast as the machine can process it.-stream_loop -1loops the concat input indefinitely. Stop FFmpeg withCtrl+Cwhen you want to end the output.-f concatselects the concat demuxer;-safe 0permits the absolute paths in the example list.-map 0:v:0selects the first video stream.-map 0:a:0?selects the first audio stream if present; the question mark makes that mapping optional. A playlist whose entries have inconsistent audio streams may still fail or produce unwanted results.-c:v libx264selects H.264 encoding.-pix_fmt yuv420prequests a widely compatible pixel format, and-preset veryfasttrades some compression efficiency for lower encoding work.-c:a aacselects AAC audio.-b:a 128ksets the encoder bitrate; FFmpeg’s native AAC encoder uses constant-bitrate mode when a bitrate is specified. AAC-LC is its default profile.-ar 44100 -ac 2requests 44.1 kHz stereo output. The bitrate, sample-rate, and channel choices shown here are an illustrative starting configuration, not a confirmed current RTMP recommendation from YouTube.-f flvselects FLV output, commonly used with RTMP. Confirm that the URL uses the correct protocol and ingest address for the setup you selected.
The example does not set a resolution, frame rate, video bitrate, or keyframe interval. Choose those against the source footage, available upload capacity, installed encoder, and YouTube’s current general encoder settings. The YouTube documentation cited here establishes HLS requirements and protocol mechanics, but does not establish current numeric RTMP recommendations; do not treat the example as a complete YouTube preset. FFmpeg command behavior can also vary with the installed build and version. Review the FFmpeg command-line documentation and verify the settings for your environment.
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Check the YouTube preview before going public
Start the command and check the preview and stream health in YouTube’s live setup before making the broadcast public. If you need exact account-eligibility criteria or current Studio screen labels, consult YouTube’s live setup documentation; the protocol pages cited below do not establish those details. YouTube’s live streaming help covers setup and eligibility information.
RTMP and HLS are different workflows
Do not switch an RTMP command to an HLS URL and assume the rest stays the same. YouTube HLS ingest has packaging and upload requirements that differ from the FLV-over-RTMP example.
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| Aspect | RTMP example above | YouTube HLS ingest |
|---|---|---|
| Packaging | FLV output over RTMP in the example; this is not a universal YouTube preset. | MPEG-TS segments and a rolling playlist are required by YouTube’s HLS guidance. |
| Playlist and delivery | The example sends a continuous RTMP output; the cited material here does not establish numeric RTMP bitrate, resolution, or keyframe recommendations. | HTTPS POST or PUT; the rolling playlist must have no more than five outstanding segments. |
| Segment duration | Not applicable to this continuous RTMP example. | YouTube’s HLS documentation specifies segments of one to four seconds. |
| Video and audio guidance | The example uses H.264 and AAC, but its audio numbers should not be treated as separately verified RTMP guidance. | YouTube’s HLS materials support H.264 and AAC and recommend 44.1 kHz stereo audio at 128 Kbps for stereo. |
For HLS packaging and ingest requirements, see YouTube HLS ingest protocol and YouTube Help: HLS live streaming. YouTube also documents DASH ingest; it is another protocol, not an RTMP URL substitution.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Copyright and playlist suitability
Only stream videos and audio you are authorized to broadcast. A playlist made from local files is not automatically safe to stream just because the files are on your device. YouTube may identify copyrighted material during a live broadcast, and a stream can be interrupted or restricted. Review YouTube’s applicable live-streaming and copyright rules before broadcasting. For a practical preflight, use the copyright safety checklist.
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Looping a set of videos does not itself establish eligibility for monetization. YouTube evaluates channels under its policies, including reused-content rules; rights to use media and monetization eligibility are separate questions. Check YouTube’s current channel monetization policies if monetization is relevant.
Troubleshooting common failures
FFmpeg rejects the concat list or stops at a file boundary
- Likely cause: A path is misspelled, quoting is invalid, or an entry uses a format the demuxer cannot read.
- Fix: Test each path individually with
ffprobe, correct the list syntax, and ensure the files are accessible to the user running FFmpeg.
Playback breaks, timestamps jump, or audio/video goes out of sync
- Likely cause: Playlist entries have mismatched streams, codecs, time bases, frame rates, or audio layouts.
- Fix: Inspect every input. Normalize the files to compatible properties or use a concat-filter workflow that decodes and re-encodes them.
The command says an encoder or muxer is unavailable
- Likely cause: The installed FFmpeg build lacks
libx264or the required output support. - Fix: Check the build’s available encoders and formats, then install or select a build with the needed support. Consult the codec documentation.
YouTube does not receive the stream
- Likely cause: The ingest URL or key is wrong, the key was rotated, the network blocks the connection, or the selected protocol does not match the destination.
- Fix: Copy the current RTMP ingest details from YouTube, verify that the key is intact and private, and confirm connectivity. Check the YouTube preview and health indicators.
The broadcast buffers or encoding falls behind
- Likely cause: The machine cannot encode the chosen output in real time, or its upload connection cannot sustain the output.
- Fix: Reduce encoding workload or output demands, check for dropped frames in FFmpeg and YouTube’s status display, and make sure the source files themselves decode smoothly. Select specific bitrate and resolution settings from current YouTube guidance and your connection’s sustained capacity rather than relying on a universal value.
Let the playlist run without leaving a computer on
FFmpeg is a do-it-yourself option, but the computer running it and its network connection must remain available. StreamNeo is a cloud service for keeping a YouTube channel live from uploaded videos: upload a recording or build a playlist, add your YouTube stream key once, and go live. It loops the uploaded videos from the cloud, so no home computer or OBS session has to stay on. StreamNeo streams to YouTube only.
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